brcmfmac: properly align buffers on certain platforms with 64 bit DMA
authorHeiner Kallweit <hkallweit1@gmail.com>
Wed, 5 Apr 2017 18:33:26 +0000 (20:33 +0200)
committerKalle Valo <kvalo@codeaurora.org>
Thu, 13 Apr 2017 14:06:30 +0000 (17:06 +0300)
commit6e84ab604bdedaa16239bd1c6e5fcb5660309f02
tree1ce2419b8cfea5cd3a9310467327e59cbf3ed1a9
parentecd7eb7c2bcf99f6c23d68ad56ce15949da848a1
brcmfmac: properly align buffers on certain platforms with 64 bit DMA

Systems with 64 bit DMA at least partially require buffers to be used
for DMA to be 8-byte-aligned. One example is Amlogic Meson GX.
Switching the MMC/SDIO driver for this platform to SG DMA mode
resulted in problems due to unaligned buffers.

Fortunately the brcmfmac driver has a global define for the alignment.
Changing it to 8 fixed the issues with Meson GX.

Suggested-by: Helmut Klein <hgkr.klein@gmail.com>
Tested-by: Helmut Klein <hgkr.klein@gmail.com>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c